Block Layer Concept for Exploring Strongly Correlated Dirac Materials
Block Layer Concept for Exploring Strongly Correlated Dirac Materials
复制标题
用于探索强相关狄拉克材料的块层概念
DOI：
10.11316/butsuri.76.11_729
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
酒井英明
中科院分区：
文献类型：
--
作者：
Mayo Alex Hiro;Takahashi Hidefumi;Bahramy Mohammad Saeed;Nomoto Atsuro;Sakai Hideaki;Ishiwata Shintaro;酒井英明
[zh] 最近，由于揭示了非常规输运和光学现象，狄拉克/韦尔费米子与固体中的量子现象（例如磁性）的耦合得到了深入研究。然而，相关拓扑材料的材料种类仍然有限。在这里，我们提出层状材料 AMn X 2 （A：碱金属和稀土离子，X：Sb、Bi）是一个有前途的平台。 AMn X 2 由容纳准2D狄拉克费米子的X方网络层和A 2+-Mn 2+-X 3 磁性块层的交替堆叠组成。通过系统地替换A和X位点，我们证明了前一层的狄拉克费米子态可以通过与块层的物理性质耦合来控制甚至丰富。（作者）
[en] Recently, the coupling of Dirac/Weyl fermions with quantum phenomena in solids, such as magnetism, has been intensively investigated, since unconventional transport and optical phenomena were revealed. However, the material variety of the correlated topological materials has been still limited. Here we propose that layered material AMn X 2 (A: alkaline and rare earth ions, X: Sb, Bi) is a promising platform for this. AMn X 2 consists of the alternative stack of the X-square net layer hosting quasi 2D Dirac fermions and the A 2+-Mn 2+-X 3-magnetic block layer. By systematically substituting the A and X sites, we have demonstrated that the Dirac fermion state in the former layer can be controlled and even enriched by the coupling with the physical properties of the block layer.(author)